cloche - noun \ˈklōsh\: a bell- or dome-shaped cover:
a : a glass or plastic cover used to protect small outdoor plants from frost; also : a similar cover used indoors to display or protect ornamental objects
b : a cover (as of metal or ceramic) placed over food during preparation or serving
[definition via Merriam- Webster]
A cloche is a functional and asthetic addition to your candle display. Not only do they provide a beautiful display, they also keep the scent of the candle contained as well as keep dust off of the surface of the candles. These brass colored knobs are all installed by hand.
This listing is for a blue, black, white, and gold ceramic knob cloche without a candle.